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Global Climate Change DigestA Guide to Information on Greenhouse Gases and Ozone DepletionPublished July 1988 through June 1999

FROM VOLUME 11, NUMBER 11, NOVEMBER 1998

NEWS...
1998 Atlantic Hurricane Season

At the end of the 1998 hurricane season, which runs from June through
November, NOAA issued a press release citing the above-average number of
hurricanes and tropical storms in 1998, the deadliest Atlantic-region
season in more than 200 years. They attributed the increased activity, 50%
more hurricanes and 30% more tropical storms than normal, to La Niña,
which exhibits cooler-than-average sea-surface temperatures in the central
tropical Pacific.

On Aug. 4, NOAA forecasters had predicted above normal tropical storms
and hurricanes in the Atlantic between August and October. There were 14
tropical cyclones (the average is 10) with ten becoming hurricanes (the
average is six), with almost all of them occurring subsequent to the
forecasts. The art of forecasting is better than ever, thanks to our
talented people and our investment in science and technology, said
Secretary of Commerce William M. Daley. Nevertheless, events of this
Atlantic hurricane season are sobering. The storms cost $3.2 billion
in insured damages and caused 21 deaths in the United States alone.

Not since the hurricane of 1780 that struck Martinique, St. Eustatius,
and Barbados (Oct. 10-16, 1780), killing between 20,000 and 22,000, has
the Atlantic hurricane basin seen storm-related fatalities like those of
Hurricane Mitch (Oct. 21-Nov. 5). Wire services attribute some 11,000
deaths to Mitch, with thousands more missing. Mitch, a Category-5 monster,
registered sustained winds near 180 mph (Oct. 25) with gusts well over 200
mph and was the fourth most intense hurricane ever observed in the
Atlantic basin this century based on barometric pressure.